The Swamp Gas Clearing*

Again, that's not me talking, that's from two of the leading military officers connected with the former US Air Force investigatory commission into UFOs- of which its lead investigator, Dr. Allen Hynek*, eventually proclaimed it a propaganda tool of the US government explicitly created to debunk the UFO phenomena.

* Dr. Hyneck, much to his regret, was the originator of the term "swamp gas" when he was still in UFO denial mode.